Rocket.Chat/app/oembed/client/oembedImageWidget.html

<template name="oembedImageWidget">
	{{#if parsedUrl}}
		{{> collapseArrow collapsedMedia=collapsedMediaVar}} <br>
		{{#unless collapsed}}
			{{#if loadImage}}
				<figure>
					<div class="inline-image" style="background-image: url('{{url}}');">
						<img src="{{url}}" rel="noopener noreferrer" height="200" class="gallery-item">
					</div>
				</figure>
			{{else}}
				<div class="image-to-download" data-url="{{url}}">
					<i class="icon-picture"></i>
					<div>click to load</div>
				</div>
			{{/if}}
		{{/unless}}
	{{/if}}
</template>